Patent GB-754773-A (GB)
Title: Organic oleaginous compositions
IPC: C10M149/02
Filed: 1954-05-24
Abstract: An oleaginous composition comprises a major proportion of an organic oleaginous material and a minor proportion of a copolymer having a molecular weight of at least 1000 prepared by copolymerization of an alpha-olefin having at least 10 carbon atoms in the molecule with an unsaturated polymerizable compound containing one, but not more than one, polar substituent, i.e. a substituent group consisting of or containing an alcoholic -OH, an -SH, an -SCN, a -CN, a -CONR2 or an -NR2 group, R being a hydrogen atom or a hydrocarbon radical. Amongst the many alphaolefins listed are decene, tetracosene, dotriacontene, and heptacontene while copolymerizable compounds are acrylonitrile, methacrylonitrile, alpha-ethyl or propyl acrylonitrile, 2 - butyl - hexenenitrile, 2 - propyl - or 2 - isopropyl - 3 - bromo - 2 - pentenenitrile, 2 - chloroethyl - or 2 - ethyl - 3 - chloro - 2 - butenenitrile and a -propyl- or a -isopropyl - beta - cyclohexyl-acrylonitrile and the corresponding amides.  In a modification a copolymer of an alpha-olefin with an unsaturated polymerizable compound containing one, but not more than one, polar substituent may be prepared and converted into one containing a defined polar substituent, e.g. the halide or ester groups in a vinyl halide or ester may be converted into hydroxyl groups e.g. by hydrolysis or alcoholysis. The copolymer may have a molecular weight of 1500 to 50,000 preferably 4000 to 15,000 and a linear hydrocarbon chain of 20 to 100 carbon atoms preferably 30 to 60 carbon atoms. The amount of copolymer used is from 0.01 to 10 per cent of the whole composition, preferably from 0.1 to 5 per cent.  The organic oleaginous material may be a mineral or synthetic lubricating oil, and may be thickened to a grease by a soap or inorganic colloid, e.g. silica, and may contain minor proportions of corrosion inhibitors, extreme pressure agents, fraction - refining compounds, foam - reducing agents, blooming agents, viscosity regulators and/or anti-wear agents.  U.S.A. Specifications 2,421,971, 2,436,926, 2,467,774, 2,486,241 and 2,551,643 are referred to.ALSO:An oleaginous composition comprises a major proportion of an organic oleaginous material and a minor proportion generally from 0.01-10 per cent, of a copolymer which has a molecular weight of at least 1000 and which has been prepared by copolymerization of an alpha-olefin having at least 10 carbon atoms in the molecule with an unsaturated polymerizable compound containing one, but not more than one, polar substituent (see Group IVa).  The organic oleaginous material may be a natural and/or synthetic lubricating oil, e.g. a mineral oil obtained from a paraffinic naphthenic, asphaltic, or mixed base crude oil or maybe a fuel.  The mineral oils may be blended with natural ester oils such as castor oil and lard oil, and/or with synthetic lubricant oils such as polymerized olefins, the polyalkylene glycols, polyesters, polymeric tetrahydrofuran and silicones.  There may also be present in the lubricating oil compositions other additives, e.g. corrosion inhibitors, such as sulphonic or fatty acids, extreme pressure compounds such as alkyl phosphates, friction-reducing compounds such as allophanates, interfacial tension modifiers or foam-reducing agents, blooming agents, viscosity regulators, such as aeryloid polymers and antiwear agents, usually in amounts from 0.05-5 per cent.  The lubricating compositions may be thickened to a grease consistency by a soap or an inorganic colloid such as silica.  U.S.A. Specifications 2,421,971, 2,436,926, 2,467,774 2,486,241 and 2,551,643 are referred to.